Sow oregano seeds indoors or under glass from February to June. Sow seed 1.5cm ( 3/4″) deep in pots or trays on the surface of barely moist seed compost and cover with a sprinkling of finely sieved compost. Place the seed tray in a propagator at a temperature of 16-21C (61-70F) or seal inside a clear polythene bag until germination which takes 14 – 21 days.
When seedlings are large enough to handle, transplant into 7.5cm (3″) pots and grow on in cooler conditions. When all risk of frost has passed, gradually acclimatise oregano plants to outdoor conditions over 7 – 10 days before planting outdoors. Plant oregano at a distance of 30cm (12″) apart on any well drained or chalky soil in full sun.